Churn.



L. G. LEWIS.

'GHURN.

APPLICATION FILED JULY 25, 1908.

921 ,85 1 Patented May 18, 1909.

60011? 6 Zea/1'6 STATES PATENT LEWIS O. LEWIS, OF COLUMBUS, OHIO,ASSIGNOR TO GEORGE H. MARTING, OF COLUMBUS, OHIO.

GHURN.

Specification of Letters Patent.

Patented May 18, 1909.

Application filed July 25, 1908. Serial No. M5328.

To all whom it may concern:

Be it known that I, Lnwis G. Lewis, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Ohurns, of which thefollowing is a specification.

My invention relates to the improvement of churns of that class in whicha rotary dasher is employed.

The objects of my invention are to provide an improved churnconstruction of this class wherein is provided improved means forimparting to the cream contained in the churn, the desired butterproducing agitation; to so construct and operate said agitating means asto insure the production of butter in a comparatively short time and toproduce other improvements in details of construction and arrangement ofparts which will be more fully pointed out hereinafter. These objects Iaccomplish in the manner illustrated in the accompanying drawing, inwhich Figure 1 is a central vertical section of my improved churnshowing the operating means in elevation, Fig. 2 is a view in elevationtaken at right angles with the view shown in Fig. 1, Fig. 3 is a planView, and, Fig. 4 is a sectional view on line of Fig. 1.

Similar numerals refer to similar parts throughout the several views.

In carrying out my invention, I employ a suitable horizontal supportingbase 1 upon which is mounted a vertical cylindrical churn casing 2, thelatter being provided with a detachable cover or lid 3 which has itscentral portion of a substantially conical form and which has its marinal portion formed with an angularliange 3 to engage the upper side ofthe reinforced top rim 2 of the case 2. The center of the lid 3 hasformed therein a vertical opening from about which extends downwardly ashort bearing projection 3 With the bottom of the casing 2, I form anupwardly projecting lug or boss 4 which is adapted to engage acorresponding opening in a removable internal bottom plate or disk 5which fits within the casing. This bottom plate is formed with a centralupwardly projecting bearing boss 5" having a bearing openingtherethrough, as shown. With the upper side of the marginal portion ofthe bottom plate 5 are formed or connected vertical blades 6, the latterbeing arranged radially at suitable intervals one from the other.

7 represents a vertical dasher shaft which passes downward through theopening of the lid bearing 3 and has its lower reduced end pivoted inthe opening of the central bearing boss 5 of the plate 5. I11 its lowerportion the shaft 7 carries a rotary dasher which con1- prises upper andlower disk-like plates 8 and 9 between which are secured at suitableintervals one from the other, radially arranged vertical blades 10. Thedasher thus formed is of such circumference as to permit of a freerotary movement within the space which is formed between the innervertical edges of the fixed blades 6. It will also be observed that saiddasher is of somewhat greater height than said fixed blades.

In order to impart a rotary movement to the dasher shaft, I provide theupper end of said shaft above the casing with a bevel pinion wheel 11,which meshes with a bevel wheel 12 carried on one end of a horizontalshaft 13, the latter being mounted in a suit-' able vertical framework14. Between the standards of the framework l t the shaft 13 carries acomparatively large flywheel 15 and a pinion gear wheel 16, the teeth ofthe latter meshing with those of a comparatively large gear wheel 17which is mounted on a crank shaft 18 below the fly wheel, said crankshaft being in turn journalcd in the framework 14 and carrying on itsouter end a suitable crank or o crating handle 19.

In operation, it will be understood that by rotating the crank shaft 18,rotary motion is imparted to the dasher shaft through the medium of thegear wheels 17 and 16, shaft 13 and bevel gear wheels 11 and 12.

The churn case 2 being filled to a desirable height with cream, and arapid rotary motion being imparted to the rotary dasher, it is obviousthat a rapid whirling or rotary current will be imparted to the cream,which will be broken at short intervals by contact with the fixed blades6 against which the cream will be constantly thrown in its centrifugalmovement. By the rapid breaking of the cream currents and the constantagitation of the cream, it is obvious that the operation described mustresult in an e1 ceedingly rapid formation of butter withln the casing.

For the purpose of removing the butter or cleaning the churn, it will beunderstood that the churn may be moved to one side until its pinion isout of engagement With the Wheel 12 and its lid has clearedthe latter,after which the lid, dasher carrying shaft and movable plate 5 may belifted from the casing.

What I claim, is:

In a churn, the combination with a vertical casing having a lugprojecting from its bottom plate, a freely removable internal bottomplate 5 havin an opening therein engaging said lug, and bladesprojecting upwardly from the marginal portion of said internal bottomplate, of a lid for said casing,

a central dasher shaft journaled in said lid, a dasher mounted on saidshaft and comprising upper and lower horizontal plates and intermediatevertical blades arranged radially, said dasher adapted to be rotatedWithin the space bounded by the inner edges of said fixed blades, andmeans for imparting a rapid rotary motion to said shaft.

In testimony whereof I affix my signature in presence of tWo Witnesses.

LEWIS C. LEE'E- IS. Witnesses:

A. L. PHELPS, L. CARL STOUGI-ITON

